Ronstan Series 55 BB Orbit Block, Triple Becket Swivel
$123.91
The orbital ball-bearing arrangement gives
the largest possible bearing race diameter. This maximizes load
performance. The proven Ronstan 2-stage bearing system features high
compression grade acetal ball bearings and a secondary full-contact
bearing. This gives minimum friction across the full working load range.
The floating sheave and bearing system is supported by a fiber-reinforced
load frame. The design was computer modeled to be stress optimized. The
Dyneema® Link is produced from FSE Robline
SK75 fiber, which is 10 times stronger and lighter than steel, and
provides the final connection from the block to the load point.
- Mainsheet systems on dinghies, sportboats and small keelboats to 9m (30ft)
- Spinnaker sheets on dinghies, sportboats and small keel boats to 9m (30ft)
- Halyard, Vang and Backstay application on boats to 8m (26ft)
- Control line applications on larger yachts